Jolt is both a coffee shop and a working specialty roaster, which makes the visit part drink, part education. The team roasts its own beans, serves them at the counter and sells coffee, tea, chocolate and brewing equipment for anyone who wants to continue at home. Workshops and business supply extend that knowledge beyond the shop.
The Avenue du Swing address opens early on weekdays, fitting naturally into Belval’s working rhythm before the laptops and laboratory doors take over. Ask what is being served and leave autopilot at the door. A roastery is most interesting when the conversation reaches beyond “strong” or “mild” and into what you can actually taste.
Offers and discounts
All discounts in BelvalOpen to everyone
- freeLoyalty cardOne stamp per transaction at the till. Nine stamps, and on the tenth visit a regular hot drink is free, excluding specials. No card or proof needed.





